火星坐标、百度坐标、WGS84坐标相互转换代码（Java和JS两个版本）

Java版code：

首先新建一个实体：

package com.zpy.addressmatch.util;

/**
 * @author zpy
 * @description Gps
 * @date 2020/04/13 9:42
 */
public class Gps {
    private double wgLat;
    private double wgLon;

    public Gps(double wgLon, double wgLat) {
        setWgLat(wgLat);
        setWgLon(wgLon);
    }

    public double getWgLat() {
        return wgLat;
    }

    public void setWgLat(double wgLat) {
        this.wgLat = wgLat;
    }

    public double getWgLon() {
        return wgLon;
    }

    public void setWgLon(double wgLon) {
        this.wgLon = wgLon;
    }

    @Override
    public String toString() {
        return wgLon + "," + wgLat;
    }
}

转换接口如下： 

package com.zpy.addressmatch.util;

import com.zpy.addressmatch.util.Gps;

/**
 * 各地图API坐标转换;
 * WGS84坐标系：国际上通用的坐标系;
 * GCJ02坐标系：即火星坐标系。
 * BD-09： 百度坐标系
 */
public class PositionUtil {
    public static final String BAIDU_LBS_TYPE = "bd09ll";

    public static double pi = 3.1415926535897932384626;
    public static double a = 6378245.0;
    public static double ee = 0.00669342162296594323;

    /**
     * 84 to 火星坐标系 (GCJ-02)
     *
     * @param lat
     * @param lon
     * @return
     */
    public static Gps gps84_To_Gcj02(double lon, double lat) {
        if (outOfChina(lon, lat)) {
            return null;
        }
        double dLat = transformLat(lon - 105.0, lat - 35.0);
        double dLon = transformLon(lon - 105.0, lat - 35.0);
        double radLat = lat / 180.0 * pi;
        double magic = Math.sin(radLat);
        magic = 1 - ee * magic * magic;
        double sqrtMagic = Math.sqrt(magic);
        dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
        dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
        double mgLat = lat + dLat;
        double mgLon = lon + dLon;
        return new Gps(mgLon, mgLat);
    }

    /**
     * * 火星坐标系 (GCJ-02) to 84 * * @param lon * @param lat * @return
     * */
    public static Gps gcj_To_Gps84(double lon, double lat) {
        Gps gps = transform(lon, lat);
        double lontitude = lon * 2 - gps.getWgLon();
        double latitude = lat * 2 - gps.getWgLat();
        return new Gps(lontitude, latitude);
    }

    /**
     * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 将 GCJ-02 坐标转换成 BD-09 坐标
     *
     * @param gg_lat
     * @param gg_lon
     */
    public static Gps gcj02_To_Bd09(double gg_lon, double gg_lat) {
        double x = gg_lon, y = gg_lat;
        double z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * pi);
        double theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * pi);
        double bd_lon = z * Math.cos(theta) + 0.0065;
        double bd_lat = z * Math.sin(theta) + 0.006;
        return new Gps(bd_lon, bd_lat);
    }

    /**
     * * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换算法 * * 将 BD-09 坐标转换成GCJ-02 坐标 * * @param
     * bd_lat * @param bd_lon * @return
     */
    public static Gps bd09_To_Gcj02(double bd_lon, double bd_lat) {
        double x = bd_lon - 0.0065, y = bd_lat - 0.006;
        double z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * pi);
        double theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * pi);
        double gg_lon = z * Math.cos(theta);
        double gg_lat = z * Math.sin(theta);
        return new Gps(gg_lon, gg_lat);
    }

    /**
     * (BD-09)-->84
     * @param bd_lat
     * @param bd_lon
     * @return
     */
    public static Gps bd09_To_Gps84(double bd_lon, double bd_lat) {

        Gps gcj02 = PositionUtil.bd09_To_Gcj02(bd_lat, bd_lon);
        Gps map84 = PositionUtil.gcj_To_Gps84(gcj02.getWgLat(),
                gcj02.getWgLon());
        return map84;

    }

    public static boolean outOfChina(double lon, double lat) {
        if (lon < 72.004 || lon > 137.8347){
            return true;
        }
        if (lat < 0.8293 || lat > 55.8271){
            return true;
        }
        return false;
    }

    /**
     * WGS84坐标系 to (BD-09)百度坐标系
     * @param lon
     * @param lat
     * @return
     */
    public static Gps transform(double lon, double lat) {
        if (outOfChina(lon, lat)) {
            return new Gps(lat, lon);
        }
        double dLat = transformLat(lon - 105.0, lat - 35.0);
        double dLon = transformLon(lon - 105.0, lat - 35.0);
        double radLat = lat / 180.0 * pi;
        double magic = Math.sin(radLat);
        magic = 1 - ee * magic * magic;
        double sqrtMagic = Math.sqrt(magic);
        dLat = (dLat * 180.0) / ((a * (1 - ee)) / (magic * sqrtMagic) * pi);
        dLon = (dLon * 180.0) / (a / sqrtMagic * Math.cos(radLat) * pi);
        double mgLat = lat + dLat;
        double mgLon = lon + dLon;
        return new Gps(mgLon, mgLat);
    }

    public static double transformLat(double x, double y) {
        double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y
                + 0.2 * Math.sqrt(Math.abs(x));
        ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
        ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0;
        ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0;
        return ret;
    }

    public static double transformLon(double x, double y) {
        double ret = 300.0 + x + 2.0 * y + 0.1 * x * x + 0.1 * x * y + 0.1
                * Math.sqrt(Math.abs(x));
        ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
        ret += (20.0 * Math.sin(x * pi) + 40.0 * Math.sin(x / 3.0 * pi)) * 2.0 / 3.0;
        ret += (150.0 * Math.sin(x / 12.0 * pi) + 300.0 * Math.sin(x / 30.0
                * pi)) * 2.0 / 3.0;
        return ret;
    }

/*    public static void main(String[] args) {

        Gps gps = new Gps(31.426896, 119.496145);
        System.out.println("gps :" + gps);
        Gps gcj = gps84_To_Gcj02(gps.getWgLat(), gps.getWgLon());
        System.out.println("gcj :" + gcj);
        Gps star = gcj_To_Gps84(gcj.getWgLat(), gcj.getWgLon());
        System.out.println("star:" + star);
        Gps bd = gcj02_To_Bd09(gcj.getWgLat(), gcj.getWgLon());
        System.out.println("bd  :" + bd);
        Gps gcj2 = bd09_To_Gcj02(bd.getWgLat(), bd.getWgLon());
        System.out.println("gcj :" + gcj2);
    }*/

}

 

Js版code：

/**
 * 提供了百度坐标（BD09）、国测局坐标（火星坐标，GCJ02）、和WGS84坐标系之间的转换
 */

//定义一些常量
var x_PI = 3.14159265358979324 * 3000.0 / 180.0;
var PI = 3.1415926535897932384626;
var a = 6378245.0;
var ee = 0.00669342162296594323;

/**
 * 百度坐标系 (BD-09) 与 火星坐标系 (GCJ-02)的转换
 * 即 百度 转 谷歌、高德
 * @param bd_lon
 * @param bd_lat
 * @returns {*[]}
 */
function bd09togcj02(bd_lon, bd_lat) {
    var x_pi = 3.14159265358979324 * 3000.0 / 180.0;
    var x = bd_lon - 0.0065;
    var y = bd_lat - 0.006;
    var z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * x_pi);
    var theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * x_pi);
    var gg_lng = z * Math.cos(theta);
    var gg_lat = z * Math.sin(theta);
    return [gg_lng, gg_lat]
}

/**
 * 火星坐标系 (GCJ-02) 与百度坐标系 (BD-09) 的转换
 * 即谷歌、高德 转 百度
 * @param lng
 * @param lat
 * @returns {*[]}
 */
function gcj02tobd09(lng, lat) {
    var z = Math.sqrt(lng * lng + lat * lat) + 0.00002 * Math.sin(lat * x_PI);
    var theta = Math.atan2(lat, lng) + 0.000003 * Math.cos(lng * x_PI);
    var bd_lng = z * Math.cos(theta) + 0.0065;
    var bd_lat = z * Math.sin(theta) + 0.006;
    return [bd_lng, bd_lat]
}

/**
 * WGS84转GCj02
 * @param lng
 * @param lat
 * @returns {*[]}
 */
function wgs84togcj02(lng, lat) {
    if (out_of_china(lng, lat)) {
        return [lng, lat]
    }
    else {
        var dlat = transformlat(lng - 105.0, lat - 35.0);
        var dlng = transformlng(lng - 105.0, lat - 35.0);
        var radlat = lat / 180.0 * PI;
        var magic = Math.sin(radlat);
        magic = 1 - ee * magic * magic;
        var sqrtmagic = Math.sqrt(magic);
        dlat = (dlat * 180.0) / ((a * (1 - ee)) / (magic * sqrtmagic) * PI);
        dlng = (dlng * 180.0) / (a / sqrtmagic * Math.cos(radlat) * PI);
        var mglat = lat + dlat;
        var mglng = lng + dlng;
        return [mglng, mglat]
    }
}

/**
 * GCJ02 转换为 WGS84
 * @param lng
 * @param lat
 * @returns {*[]}
 */
function gcj02towgs84(lng, lat) {
    if (out_of_china(lng, lat)) {
        return [lng, lat]
    }
    else {
        var dlat = transformlat(lng - 105.0, lat - 35.0);
        var dlng = transformlng(lng - 105.0, lat - 35.0);
        var radlat = lat / 180.0 * PI;
        var magic = Math.sin(radlat);
        magic = 1 - ee * magic * magic;
        var sqrtmagic = Math.sqrt(magic);
        dlat = (dlat * 180.0) / ((a * (1 - ee)) / (magic * sqrtmagic) * PI);
        dlng = (dlng * 180.0) / (a / sqrtmagic * Math.cos(radlat) * PI);
        mglat = lat + dlat;
        mglng = lng + dlng;
        return [lng * 2 - mglng, lat * 2 - mglat]
    }
}

function transformlat(lng, lat) {
    var ret = -100.0 + 2.0 * lng + 3.0 * lat + 0.2 * lat * lat + 0.1 * lng * lat + 0.2 * Math.sqrt(Math.abs(lng));
    ret += (20.0 * Math.sin(6.0 * lng * PI) + 20.0 * Math.sin(2.0 * lng * PI)) * 2.0 / 3.0;
    ret += (20.0 * Math.sin(lat * PI) + 40.0 * Math.sin(lat / 3.0 * PI)) * 2.0 / 3.0;
    ret += (160.0 * Math.sin(lat / 12.0 * PI) + 320 * Math.sin(lat * PI / 30.0)) * 2.0 / 3.0;
    return ret
}

function transformlng(lng, lat) {
    var ret = 300.0 + lng + 2.0 * lat + 0.1 * lng * lng + 0.1 * lng * lat + 0.1 * Math.sqrt(Math.abs(lng));
    ret += (20.0 * Math.sin(6.0 * lng * PI) + 20.0 * Math.sin(2.0 * lng * PI)) * 2.0 / 3.0;
    ret += (20.0 * Math.sin(lng * PI) + 40.0 * Math.sin(lng / 3.0 * PI)) * 2.0 / 3.0;
    ret += (150.0 * Math.sin(lng / 12.0 * PI) + 300.0 * Math.sin(lng / 30.0 * PI)) * 2.0 / 3.0;
    return ret
}

/**
 * 判断是否在国内，不在国内则不做偏移
 * @param lng
 * @param lat
 * @returns {boolean}
 */
function out_of_china(lng, lat) {
    return (lng < 72.004 || lng > 137.8347) || ((lat < 0.8293 || lat > 55.8271) || false);
}